Thanks for the reply!
I created Royale as a new country in the GC as U00.
All appears to work except I can't build the ships.
(Interestingly, if I move the scenario to Tasmania (Macquarie) I *can* build ships. Fascinating!)
I completely forgot about the whiteman value. In fact, I *thought* it was no longer used. I'll give it a try later and see.
For those who are interested, I was inspired by the book "Island in the Sea of Time", where Nantucket island is transported back - by an 'event', forsooth! - to the Bronze age. I figured a mere 600 years ought to be possible for this humble student...and Isle Royale would stand in for Nantucket.